Question: What is the number of children not enrolled in school in the Rashidun Caliphate?
Paraphrase: What is the number of children not enlisted in school within the Rashidun Caliphate?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q12490507 wdt:P30 ?X . ?X wdt:P2573 ?answer}
Answer: 101000000, 143000000